Buffing-machine.



No. 871,962.l

PATENTED NOV. 26., 1907.

G. F. STEWART.

BUFFING MACHINE.

APPLIOATION HLBD JULY 1s. 1906.

8 SHEETS-S1. JET 2.

A In venan' Gemgef' tewar' Io. 871.96% PATENTED NOV. 26, 1907. G. F.STEWART.

BUFFING MAGHNE.

APPLICATION FILED JULYls. 1906.

8 SHEETS-SHEET 3.

PATENTED Nov. 276, 1907.

G. P. STEWART.

BUFFING MACHINE.

APPLIOATION FILED JULY 1a. 190s.

e SHEETS-'Smm 4.

In ve n tar: T90/rye Ffewar N.Y871,962. PATENTED Nov. 26, 1907.

G. P. STEWART. Y BUPPING MACHINE.

APPLICATION FILED JULY 13, 1908.

6 SHEETS-SHEET G. F. STEWART. BUFFING MACHINE.

A PPLIUATION FILED JULYIB. 1906 PATENTED NOV. 26, 1907.

6 SHEETS-SHEET 6.

with eases.: Inventor:

Iza/a6, George .Szvfewawt @M by M7 Mm entre@ sito t i GEORGE F.STEWAl-'t, OF LYNN, MAHSlXllY/St Application tile/.l (l'uly i3,

letented Nov. 26, 1907.

lilittl. Soi' To all whom il 'may concern.'

Be it known that l, GEORGE F. S'luwl-inr, e citizen of the UnitedStates, residingT :it Lynn, in the county of Essex, Statt/e of ities.-

sachusetts, have invented an improvement in Ending-Machines, et whichthe following description, in Connection with the :uterine ianyingdra-wings, is n speeitieetii'fn, like letters on the drawingsrepresenting like` parts.

This invention relzites to bnlling Inzichines of the type commonly knownin the art os Nnulnkeag machines, distinguished by the fact that thebulling pad is of genero-l disk xis at the center ot Vthe disk,controdistin giished from bullinibr .machines employing bu'llng rolls,about which the nbrndnnt 'peper or cloth is wrapped.

The roll machines are oonnnonly 'used upon the bottoms of `fore ports ofboots and shoes, While the Nauinkeztg machine is niore generally usedfor what is known as sh-Linking' out, that is, Yfor iinishing theslninks, for which use it is better adopted beeziuse the disk forni ofpaid permits the bullinpT to be carried down eloser to the breast of theVheel and into the eonenfve breast, whereus with e. roll the bullinfi'eould be carried no nearer to the heel thun the length of the rudius ofthe roll.

My invention eontemplutes the use of n multi' heed nmehine, 'preferablyof three heads, adapted 'for different grades or kinds of work, ond myinvention also contemplates various improyements in the ineens forholding the pud covers, whereby :i greet saving' is elleeted in the:imount of :ibi-:ident fabric' or materiel required for any single pad.

My invention zilso contemplates various improvements in the melius forupplyine the pad covers to the pfidl intended to hieilitee suohnp'plient ion.

'lhe above with other feutures of my invention will be lwreinnfter morefully disclosed, :ind will be best understood from :i description ol'the stime in eonneetiini with ene. embodiment thereof shown in the :leseompnnying' druwings.

Referring' to the drawings: Figure l,--is :i side elevation undillustrutes n muehine mede in neeordzinee with one embodiim'nt ol myinvention; Fig. 2,-:1` front elevation of seid inuchine; Fig. 3,--epartiel reni' el'-- shape und. nmde to rotate about :i yertieel' wrt-ionol'x the saine; Fig. 4,-011 an enlarged ,I 'nie rows e. top or pien Viewof the innenine in Fig. l; Fig. 5,-o View on a. still l hiru'er sshowing the arrangement of 'air conduits ter tekinfir core of the dust,this View :ilse showing the nornnil location of the pod cover applying,ldevice; Fig. 6,-n front elerutien of Figi'. 5; Fig. 7,-8. detail of thepud eover npldying erin and locking holes tor i.ositioniiu.; the sanne;Figs. S and 9,-- nre i'iews showing vin plun dilferent positions of thepnd cover applying device; Fig. 10,- 4 detail showing in ele Yu-tion undpartial seelion one of the pads, its spindle., and the i cover applyingdevice in position beneath the some; Fig. lLWfi-soniewhut siinilzirviewshowing' the paid eover applying device in the net of applying; a. pad;Fig. 12,-:in enlarged seetionnl detail showing the` preferred meu-ns forclamping the pnd eover in Osition; :ind Fig. t3, a sectional detail o'the third spindle und its holder,to be referred to.

llel'erring to the drawings, in the particulur embodiment of myinvention selected for illustrotion herein und shown in the drawings,the column, 1, ol' suitable shape and construetion to sustnin theii'orking ports, is provided ut its upper end with o. head, 2, whieh(see Fig. 4.) is of generati Y-shnpe, the stem, 3, of the i extendingrrearwardly, und the two nrms, 'l, 5, extending forwardly t0- wzn'd theoperator.

'The pnd. spindles :ire shown es mounted in the l'orwurdly extended:irms 4 and 5, and ure herein shown ns three in number, the two spindles(i und 7, :it the outer ends of the m'ms, being substnntinlly similar,while the spindle ti, shown :is carried et the inner side ol' the ni'ni,el, is preferably of :L dill'erent oonstruetion. lfhiieh of thespindles, however, is driven by n greeted pulley, t), the severalpulleys being driven by u. eonimon pulley, 1l), passed about the twopulleys :it the ends of the :n'ms und against one side of the pulley onthe spindle S, around :in idler, 11 (Fig. 4), thenee rearward betweentwo idlers, 12, to go over :i pair of Vertieully arranged idlers, 13,journuled in the forked reur end of the stein of the imiehine-hmid 3,thence downward at the r sur ol' the machine to und about u. driving'Ilulley 14, fast on the drive-Shaft, .15 journuled in .beurings in orcurried by the eolumn nere` the buse tlwreoi'. This driveshell moi' hedriven in :my `suitable nninner, lprci'erniff.' i eze-r', .hf-f est undloose pulthreaded lower end,

leys, 16 and 17, (Fig. 2.) adapted to receive a belt, 18, under thecontrol of a suitable shipper, 19: This shipper is mounted to Slideorizontally in bearings upon and at the rearof thecolumn, and 1scontrolled by a shipper lever, 20 (see Fig. 2)', This shipper lever isfulcrumed at its base at 21, and, a short distance above its base, isprovided with a spring-pressed latch, 22, adapted to coperate with oneor another of two seats, :23, in a holder, 24, arranged adjacent to saidfulcruni. This spring-pressed latch yields against a sufficient pressureexerted by the operator, tending to throw the lever into one or anotherof its extreme ositions, and which is suicient to retain said lever inthe attached shipper against displacement when onceit has been movedinto desired position.

By driving all the spindles, whatever be the number thereof, by a singlebelt, there is much less liability of delays from broken belts, becausethe longer the belt, the longer the period of wear without breakageunder given conditions.

Referring new particularly to Figs. 10, 1 1 and l12, the spindle 6 hasattached to its lower end a pad-carrying plate, 25, provided at itsperiphery with a supporting flange or lip, 26, to receive and supportthe inturned lip or ange, 27, of a pad, 28. This pad is of the usualshapie exteriorly, common to the pads of Naum eag machines, and it maybe of any desired internal construction, either neumatic, to b'einflated by air or filled with telt, or any other yieldable or softresilient material that will present a sullicient cushion padl face.Overlying the inturned pad lip 27 is a flat ring, 29, shown as fittingthe hublilre center portion of the disk, 25, and presenting a beveledperipheral edge adapt- 'ed to receive the inturned lip, 30, of the padcover, 31, applied to the pad. This pad is held clamped in position foruse by a cupshaped cap, 32, rotatably carried by and a't the lower sideof a nut, 33, screwed upon the 34, of said spindle 6. When this mit isscrewed down upon this threaded spindle, the cap is caused to clamp theinturned lip 3() of the pad cover tightly between itself and theringlike clamping plate 29 referred to. lt will be observed that theclamping action is wholly between the cap and the plate 29, and notbetween said cap and the pad 27 as in machines of this type heretoforemade so far as known to me. The advantage is this: By. the coverlipbetween two metal or other surfaces that are independent of the `)aditself, the circle ol' clamping action may lie carried nearly or quiteto the periphery of the pad without dcstroyingthe resilience of the 'padnear or at its periphery. 'lhc pad itself being incapable of resistingany clamping ac tion 'must be supported from within by a disklike plate,which, being carried to the .111g action thereby,

clamping vthe spider, 3S.

periphery of the pad to support the clampdestroys resiliency of the pad,and which, if carried within toward the centerof the pad so as to leavethe pad unrestrained near its periphery, requires a lip on vthe padcover very shown. in thek drawings, requiring almost double the amountof abradant material. required in the formation of the thermore, byusing a very narrow inturned cover lip, tially continuous and nottongued, as is required where the lip is deep, as in machines as atpresent used. These pad covers are usually molded up in advance, and, toapply them nicely, is so diflicult an operation that it has been commonthis type with cover applying devices which are adapted to receive a padcover and apply it mechanically to the pad, and there hold it until itcan be clamped in position.. In machines as heretofore constructed,these cover applying devices have been located at one side of themachine on the arm thereof, and when a new cover is to be applied thead-carrier, made detachable from its spindle for this purpose, has beendetached 'and placed in the cover applying device at one side of themachine in order that its pad may receive the intendedl cover' andthereafter the carrierwith its cover pad is replaced ven the spindle,before the machine is again ready for use. In the machine herein shown,however, the cover applying device, while normally mounted at one sideof 'the machine and out of interference with the o erative and his work,is, nevertheless, made movable to enable it to be tion directly beneaththa'tand in alinement with the axis of the spindle carrying the padwhich is to be covered, so that the cover may be applied to the padwithout removing it or to provide machines of.

brought into posi` much deeper than pad. Furl its carrier from thespindle upon which it is l used. ln the machine shown, there being aplurality of pad-carrying spindles, the cover applying device is somounted as to be mov able into position to apply a cover topeitherspindle as required.

Referring particularly to Fig. v5, ,the cover' applying device is shownat C mounted upon the end of an arm, 35, fulcrumed'upon the frame at 36,the dotted lines indicating the maybe' l different positions into whichit moved.

Referring to cover applying device isconstructed asfollows: The outerend of the carrying arm 35 is provided Awith a. vertically arranged headmade tubular to receive a hollow stem, 37, of This spider presents a series of radial arms, in which are pivoted'at 39 a serios of infolders,40, shown as claw-shaped, the upper arms l] of which constitute the in-Qfolders proper, and, if viewed from the vtop (see Figs. 'S and 9) areof a general spade- Figs. 8 to 11, inclusive, this 38, and is supportedfrom beneath shape, while the lower arms, 42, underlie and are adaptedto be engaged by a lip, 43, on the depressible actuator, 44. Thisactuator is shown as cup-shaped, and preferably is of an 5 internalshape exactly fitting the desired external shape of the pad cover whenapplied to its pad. This actuator is mounted upon the upper end of aspindle, 45, which slides freely in the tubular stem, 37, ot' thespider', b a spring, -l6,7which permits it to yielddoii'nwardly whenrequired, and as will be described. The tubular stem, 37, together withthe cup-shaped actuator and the'inlolders '15 are made verticallymovable in the ar1n,'35,

by a lever, 47, fulcrumed at 48, on the armhead, and enter a slot insaid stem, with which it is connected by a pin, 49, as shown.

W'hen the pad cover is to be applied, the

arm 35 is swung into position beneath the spindle carrying the pad to becovered, as shown in Fig. 10. The pad cover may now, if desired, bedeposited in the cup-shaped actuator, 44, or, as I prefer, it is appliedloosely to and about the pad to be covered. The

operative then depresses the lhandle end of the lever, 47, and lifts thestem, 37 with the device carried thereby to meet the cover loosely 1'f'laeed on the pad. As the lifting progresses the cup-shaped actuator,44,

brings up against the cover at its pad, 'and is thereby prevented frommoving further vern tically, so that fui ther vertical movement of thestem by lifting the spider and the infolders relative to the newstationary actuator operates to cause said infolders, acted upon by thelip 43, Fig. l0, to be turned inward, converging toward the center ofsaid actuator, and, pushing before them the up- 40 turned lip, 30, ofthe cover, said infolders acting to lay the said lip downward againstthe beveled periphery ot the disk, 29 (Figs. `11 and 12'). The handlolever is now retracted to permit the spring 46, which was comlressedduring the upward movement of the stem, to return to said stem downwadsome- Awhat to cause the Inlolders, acted l pon by the lip 43 ol theactuator to be withdrawn sutliciently to permit the clampingr cap 32 tobe screwed down upon and to hold the inl'olded lip of the cover.Preferably the infolders will beretained overlying and holding the outerperipheral edge of the infolded lip until the clamping has beencompleted,

after which the actuator' and infolders are permitted to drop to theiroriginal positions and the arm swung again to one side o1' into positionbeneath another ot' the spindles.

When the cover has been clamped as described, the handlr` is restored toits original position, withdrawing the intolders and then dropping themand the actuator into their .normal positions in the arm 35, after whichsaid arm is swung back to its original posi- 615 tion or swung' to theother spindle to apply a cover thereon, as may be needed. As the stem 37is lowered, the spring i6 by raising relatively the actuator 44 operatesby contact ol" the peripheral edge of said actuator with the inloldingarms Ll1 to open the latter away from and clear the pad, as shown inFig. 10.

To facilitate centering the cover applying device under and in alinementwith either ql' the spindles to which a'pad cover must be applied, thehub-end ol' the arm 35 (see Fig. 7,) is provided with a series of holes,50, shown as three in number, one for cach ol the spindle positions andthe third l'or the normal position of disuse, and adapted to receive aplug or pin, 51, (see Fig. 6) operated by a handle lever, y52, tulcrumedat When the' arm is to he swung into position, this handle lever, 52, isturned into vertical position to lil't the pin, 51, from one of theholes, 50, thereby to free the arm and permit the latter to be swunginto desired position. The end of this pin is tapered or mounted, sothat by drawing the handle lightly forward when the arm approaches thedesired position this tapered end ol` the pin will lind one ol the holespositioned therefor, and will act u on the depression ol' the handle tocenter or a ine the pad applying device accurately to the spindlecarrying the pad to be covered.

The third spindle, 8, may, if desired, be provided with a pad and coversimilar to the others, but preferably I shall employ an a bradant coverot' what is known as the pin wheel7 type, the same being nothing moreno1' less than a llat disk of an abradant material', such as sand paper'or emery cloth. This s indle and its holder and cover are shown indldtail in Fig. 13, the spindle 8 in this instance, however, beingtubular' and provided at the lower' end with a flanged head 68, on*which is removably secured a llat ring or washer 69, of suitableresilient material prel't'n'ably leather. The lower 'face of this washeris provided with a cover or disk 7() of sand pa er, emery cloth or otherabradant materia which is removably clamped against said washer by thebutton-like head 7 ,l of a screw 7l. '.lhat this cover supportingr andclamping' screw-may be readily removed 'from said spindle to facilitateapplying the cover or disks, its upper end is threaded at 72 to engage along stemmed nut 73, removably and rotatably mounted in the upperportion ol said spindle. 'lhe upper end ol" the stem of this nut 73 isprovided with a milled head 7l, to 'facilitate turning it and also witha circumferential groove to receive the end of a screw 75,therebvpermitting rotation oil said mit in the spindle.

yinserting the screw 7l), having a disk posltioned upon its head, intothe lower end ol the spindle and then turning said nut, the screw may beelevated to hrmly clamp the shown in Fig. 1, connected with the mainsuction, 57, of the machine. f

The machine disclosed. provides pads of such number andarrangement as topermit of different grades of work, particularly in boot and shoemaking, to be performed thereon with the greatest facility .and with theleast movement from position by the operative. Preferably the spindle 6will be located farther to the front than the spindle 7, and the lattersomewhat farther front than the spindle 8, and, also preferably, thelower loperative end of the spindle S will be below the correspondingends of the spindles 6 and 7, the holder being intended to enable theoperative without taking any step to reach all of the spindlesconveniently.

When bufling the bottoms of boots and shoes, the operative willordinarily first present the shank of the shoe to the pin Wheel spindleS and clean out the rear end of the shank ends to breast of the heel. Hewill then present the shank to the pad cover on the left-hand spindle 6to grain or preliminarily buff the rest of the shank, and then willpresent ,the shoe to the spindle 7 for finishing the shank, and also theball,`which latter has been previously grained upon the usual. rollerbuffer.

1 have described invention, and,

cover against its washer support.' Upon nnl screwing the nut the screwand its cover or disk of abradant material may be quickly removed and anew cover applied.

rThe peripheral edge of the washer is beveled inwardly to add resiliencyto its edge, so that it more readily adapts itself to the work.

The holders or bearings for the spindle are of the same construction asthose for the spindles 6 and 7 intermediate which the spindle isprovided with the grooved ldriving pulley 9, referred to.

Referring now to Figs. 1, 2, 5 and 6 to conduct away the dust producedby the action of the various abradant covers, or pads, 1 have provided aseries of conduits, 54, 55 and 56, the conduits, 54 and 55, having theiroutlets directly in the rear of the two pads on the spindles 6 and 7,respectively, while the third outlet, 56, stands in the rear of the padon the spindle, S. These inlets are as close possible to thefpads, whichthey are to care for, and, at the same time, leave sufficient clearancefor the cover applying device to be brought into position. As hereshown, the two conduits 54 and 55 are joined at their inner ends, whilethe conduit 56 springs as a branch from one of them, viz: the conduit54. All these 'conduits merge into a single conduit, 57, which (seeFig. 1) extends downward within the column and at the rear thereof,where its outlet is controlled by a damper, 58, shown as connected by arod, 59, and bell crank, G0, with the shipper-rod, 19. By this arrange-`nient when the shipper is moved to cut off the power, the damper isclosed andthe suction at that particular machine stopped until 'themachine is again to be put into use; This is of great importance in afactory employing a large number of machines that are required to besupplied with suction apparatus for removing tne dust, for, as a rule,quite a percentage of the machines are always in disuse, for instance,when the operatives are delivering or receiving work, or adjustingmachines. So far as 1 know, this is the first instance where the suctionhas been controlled automatically-by the starting and stopping means ofthe machine to which the suction is applied.

1 am aware that suction fans have been applied to individual machinesand started and stopped with the machines being driven by the sameprayer-shafa but my invention contemplates connecting these machines bybranch pipes w ith large suction conduits leading to a central suctionfan, which is opone embodiment of my without limiting myself thereto orto details thereof, 1 claim and desire to secure by Letters lcaatent- 1.A hurling machine of the class described, provided with a support havingdivero'ing arms, an upright bulling spindle in a at the end of each ofsaid arms, an additionalv bufling spindle carried by and at the side ofone of said arms, and suction means comprising diverging conduitsleading respectively to the spindles at the ends of said arms, and anaddi-tional conduit projecting from the side of one of said conduits forthe spindle at the side of said arm` 2. A bufling machine having, incombination, a bufling tool, suction'means for carrying ofi n e teproducts, means for starting an stopping the tool, and a valve undercontrol of the starting and stopping means for rendering tho suctionmeans functionally operative and inoperative as the tool isy started andstopped. l

2%. A butling machine'having, incombination, a plurality of buflingspindles, alsingle driving means for said spindles, a dust c'onduit forsaid spindles, means forstarting and erated hy the main engine of thefactory, and stopping the spindle driving means, and a which operatescontinuously whether the shut-oil for the dust conduit for rendering'theindividual machines are in operation or not` suction means functionallyoperative and At thclront ofthe column 1 (see Fig. 1) is inoperative asthe spindles are started and arranged a brush, 61, mounted upon ashal't,stopped. i, 62, provided with a pulley, 53, connected by 4. A bul'lingmachine havin T, in combinaa belt, 64, with a pulley, 65, on the shaftof tion, abuiling tool, a dust conduit having an the idlers, 13, to bedriven by the latter. j 'lhis brush is protected by a hood, 66, as j forstarting andstopping the movement of inlet in co-aeting relationtherewith, means ermee said bufng tool, and ai shut-oil' for die (lostconduit under control of 'tlm tool. shipping and starting means.

5. A buling machine lmvirig, tionj a movable buiiing tool. sopping undstarting means 'for said tool, um! suction means having a. shut-olfcontrolled by the l the saune to open the conduit when the tool saidtool stopping and snrt-ingA moans.

6. A bufling nimliine having, in (-.ombinstion, a plurality of movablebnflil'w tools, s indles lor supporting sind tools a ilusl rfonulthavlng inlets 1n oopornti'vo relation with said tools, n. shut-oil .forsaid conduit.,

stoppingr and starting means for sniil tools7 and means under control ofsind snooping and starting means lor oper-sling be stintoil' in combinai l l l l l l 7. In :L buHing machine the combination of a. buflingtool,mea.ns l'or operating the sanno, n conduit having an inlet inproximity ro said tool, n. Valve for said conduit, provisions forstnrtiiig and stopping the. -tool operating means, und connectionsbetween the sanne and the conduit valve to oil-use is started and closethe conduit when the tool is stopped,

ln testimony .i'hereo'l", l have signed my .nume to thisspeoilicnvtfion, in the presence of two subscribing witnesses.

GEORGE F. STIYART. 7Witnesses:

JOHN J. Hns, JonN GnLznNLion'rnR.

